package com.tuanzi.loan.security;

import java.io.IOException;

import javax.annotation.PostConstruct;
import javax.servlet.*;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.SecurityMetadataSource;
import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
import org.springframework.security.access.intercept.InterceptorStatusToken;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.web.FilterInvocation;
import org.springframework.stereotype.Component;

@Component
public class LoanFilterSecurityInterceptor extends AbstractSecurityInterceptor implements Filter {

    @Autowired
    private LoanInvocationSecurityMetadataSource loanInvocationSecurityMetadataSource;
    @Autowired
    private LoanAccessDecisionManager loanAccessDecisionManager;
    @Autowired
    private AuthenticationManager authenticationManager;

    @PostConstruct
    public void init() {
        super.setAuthenticationManager(authenticationManager);
        super.setAccessDecisionManager(loanAccessDecisionManager);
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        FilterInvocation fi = new FilterInvocation(request, response, chain);
        invoke(fi);

    }

    public Class<? extends Object> getSecureObjectClass() {
        return FilterInvocation.class;
    }

    public void invoke(FilterInvocation fi) throws IOException, ServletException {
        InterceptorStatusToken token = super.beforeInvocation(fi);
        try {
            fi.getChain().doFilter(fi.getRequest(), fi.getResponse());
        } finally {
            super.afterInvocation(token, null);
        }

    }

    @Override
    public SecurityMetadataSource obtainSecurityMetadataSource() {
        return this.loanInvocationSecurityMetadataSource;
    }

    public void destroy() {

    }

    public void init(FilterConfig filterconfig) throws ServletException {
    }
}